[2172503] Two kernel oopses in mm/swap PTE handling on 7.0.0-42-generic (resolute-updates) — likely incomplete fix for CVE-2026-64416
LaunchpadBug #2172503 “Two kernel oopses in mm/swap PTE handling on 7.0.0...” : Bugs : linux package : Ubuntu=== SUMMARY ===
On 2026-10-29 this machine panicked twice within ~2h40m, in two different
mm/swap code paths, both times while the kernel was consuming a PTE that
decodes as a swap entry but is not backed by a valid swap_info entry:
crash #1 19:27:36 fork path -> dup_mmap -> copy_nonpresent_pte
-> swap_dup_entry_direct -> __swap_duplicate